From: Nutomic <me@nutomic.com>
Date: Sat, 18 Feb 2023 18:57:45 +0000 (+0900)
Subject: Proper permission check for federated comment distinguish (#2697)
X-Git-Url: http://these/git/%22https:/nerdica.net/photo/contact/80/%24%7BappleTouchIcon%7D?a=commitdiff_plain;h=a42f7271e6f221dfd8d568f7ec2a9a3ea093ecc2;p=lemmy.git

Proper permission check for federated comment distinguish (#2697)

Co-authored-by: Dessalines <dessalines@users.noreply.github.com>
---

diff --git a/crates/apub/src/activities/create_or_update/comment.rs b/crates/apub/src/activities/create_or_update/comment.rs
index 54df09ce..4177f71f 100644
--- a/crates/apub/src/activities/create_or_update/comment.rs
+++ b/crates/apub/src/activities/create_or_update/comment.rs
@@ -28,7 +28,7 @@ use activitystreams_kinds::public;
 use lemmy_api_common::{
   comment::{CommentResponse, CreateComment, EditComment},
   context::LemmyContext,
-  utils::check_post_deleted_or_removed,
+  utils::{check_post_deleted_or_removed, is_mod_or_admin},
   websocket::{send::send_comment_ws_message, UserOperationCrud},
 };
 use lemmy_db_schema::{
@@ -178,6 +178,22 @@ impl ActivityHandler for CreateOrUpdateNote {
     context: &Data<LemmyContext>,
     request_counter: &mut i32,
   ) -> Result<(), LemmyError> {
+    // Need to do this check here instead of Note::from_apub because we need the person who
+    // send the activity, not the comment author.
+    let existing_comment = self.object.id.dereference_local(context).await.ok();
+    if let (Some(distinguished), Some(existing_comment)) =
+      (self.object.distinguished, existing_comment)
+    {
+      if distinguished != existing_comment.distinguished {
+        let creator = self
+          .actor
+          .dereference(context, local_instance(context).await, request_counter)
+          .await?;
+        let (post, _) = self.object.get_parents(context, request_counter).await?;
+        is_mod_or_admin(context.pool(), creator.id, post.community_id).await?;
+      }
+    }
+
     let comment = ApubComment::from_apub(self.object, context, request_counter).await?;
 
     // author likes their own comment by default
diff --git a/crates/utils/translations b/crates/utils/translations
index 21808b45..1c42c579 160000
--- a/crates/utils/translations
+++ b/crates/utils/translations
@@ -1 +1 @@
-Subproject commit 21808b45ea3ef7fa91654d4f6738b5144da6bfe7
+Subproject commit 1c42c579460871de7b4ea18e58dc25543b80d289